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Secondary battery

Active Publication Date: 2014-08-21
SAMSUNG SDI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent text describes a secondary battery with an electrode assembly including a first electrode plate, a second electrode plate, and a separator interposed between them. The battery also includes a case and a first current collector plate with a first fuse part. The first fuse part includes at least two fuse holes spaced apart from each other. The first current collector plate has a first connection part and a first extension part with a corner. The first fuse part may include a first fuse hole and a second fuse hole. The first fuse hole and the second fuse hole may have the same size and a width in a range of 0.5 to 2.0 mm. The distance between the first fuse hole and the second fuse hole may be 2 to 4 times the width of the first fuse hole or the second fuse hole. The first fuse part may also include a first terminal hole and a second fuse hole. The technical effect of the patent text is to provide a secondary battery with a reliable and safe fuse system.

Problems solved by technology

If excessive heat is generated or the internal pressure of the secondary battery increases due to a variety of factors, e.g., decomposition of an electrolyte, ignition or explosion of the secondary battery may result.

Method used

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Embodiment Construction

[0038]Hereinafter, examples of embodiments will be described in detail with reference to the accompanying drawings such that they can easily be made and used by those skilled in the art.

[0039]FIG. 1 illustrates a perspective view of a secondary battery according to an embodiment. FIG. 2 illustrates a cross-sectional view of the secondary battery taken along the line I-I′ of FIG. 1. FIG. 3A illustrates a perspective view of a first current collector plate shown in FIG. 2. FIG. 3B illustrates a plan view of a first extension part shown in FIG. 3A.

[0040]Referring to FIGS. 1 and 2, secondary battery 100 according to the embodiment includes an electrode assembly 110, a first current collector plate 120, a second current collector plate 130, a case 140, and a cap assembly 150.

[0041]The electrode assembly 110 may be formed by winding or laminating a stacked structure including a first electrode plate 111, a separator 113, and a second electrode plate 112. Here, the first electrode plate 11...

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PUM

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Abstract

The secondary battery includes an electrode assembly including a first electrode plate, a second electrode plate and a separator interposed between the first electrode plate and the second electrode plate, a case accommodating the electrode assembly, and a first current collector plate electrically connected to the first electrode plate and having a first fuse part formed at its one side, wherein the first fuse part includes at least two fuse holes spaced apart from each other.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]The present application claims the benefit of Korean Patent Application No. 10-2013-0018063, filed on Feb. 20, 2013, in the Korean Intellectual Property Office, and entitled: “Secondary Battery,” which is incorporated by reference herein in its entirety.BACKGROUND[0002]1. Field[0003]Embodiments relate to a secondary battery.[0004]2. Description of the Related Art[0005]Secondary batteries are rechargeable, unlike primary batteries which are not. Types of secondary batteries include a low capacity battery including a battery cell in the form of a pack and typically used for small portable electronic devices, e.g., cellular phones and camcorders, and a high capacity battery including dozens of battery cells connected to one another and widely used as a motor-driving power source for electric scooters, hybrid vehicles, or electric vehicles.[0006]Secondary batteries may be manufactured in various shapes, including cylindrical and prismatic shap...

Claims

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Application Information

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IPC IPC(8): H01M2/34H01M50/176H01M50/533H01M50/534H01M50/54H01M50/55H01M50/553
CPCH01M2/348H01M2200/103Y02E60/10H01M50/54H01M50/581H01M50/534H01M50/55H01M50/553H01M50/176H01M50/533
Inventor BYUN, SANGWONYOON, HAEKWONLEE, SEUNGBOKHAN, MINYEOL
Owner SAMSUNG SDI CO LTD